body {
    padding: 0;
    margin: 0;
    font-family: Verdana, Tahoma, SANS-SERIF;
    font-size: 12px;
}

#topBar {
    height: 25px;
    width: 100%;
    background-color: #ffd383;
    margin: 0;
    padding: 5px;
}

#mainContent {
    margin: auto;
    width: 1024px;
    margin-top: 10px;
}

#leftBox {
    width: 250px;
    background-color: red;
    position: relative;
    top: 1px;
    height: 100%
}

#contentBox {
    width: 750px;
    background-color: green;
    float: right;
}